Gallery of Fluid Motion (Spring 22) by Mitul Luhar https://padlet.com/luhar/GoFM22 en-us 2022-01-05 16:54:41 UTC 2025-10-24 21:57:44 UTC hello@padlet.com Fog over Haleakalā aftosmis https://padlet.com/luhar/GoFM22/wish/1986791978 I shot this video of fog over the peak of Haleakalā, the easterly volcano on Maui, in 2019. Unlike the rest of the island, Haleakalā’s summit experiences a cold-summer Mediterranean climate (“one of the few locations in the world with this climate type”, according to Wikipedia) which makes it far cooler than the rest of the island, As the humid, water-dense air from sea-level travels up the slopes of Haleakalā, it forms a dense sea of clouds over the crater, creating a bizarre, alien-like landscape. ]]> 2022-01-11 19:06:08 UTC https://padlet.com/luhar/GoFM22/wish/1986791978 wildange https://padlet.com/luhar/GoFM22/wish/2001380191 2022-01-19 20:07:05 UTC https://padlet.com/luhar/GoFM22/wish/2001380191 maamezqu https://padlet.com/luhar/GoFM22/wish/2001540122 After doing an oil change and fuel filter replacement on this car, we emptied the remaining fuel in the fuel filter to the oil tray. The sparkles in the tray are small metal shavings(not good), but it looked pretty cool!]]> 2022-01-19 21:50:16 UTC https://padlet.com/luhar/GoFM22/wish/2001540122 Sand Dunes near Yuma, AZ aakeelin https://padlet.com/luhar/GoFM22/wish/2001545076 The pattern formed in the sand arises when the wind blows strongly enough to sweep up individual grains and disperse them across the dune. ]]> 2022-01-19 21:54:24 UTC https://padlet.com/luhar/GoFM22/wish/2001545076 Waterfall and Clouds at Yosemite aakeelin https://padlet.com/luhar/GoFM22/wish/2001555149 It looks as though there is turbulent flow from the beginning of this waterfall I spotted while in Yosemite. Also I thought the cloud formation was super cool, especially on the right as you can see it bending over the mountain.]]> 2022-01-19 22:02:22 UTC https://padlet.com/luhar/GoFM22/wish/2001555149 Thunderbirds (F-16s) in Formation onufer https://padlet.com/luhar/GoFM22/wish/2007658942 The thunderbirds at an airshow burning smoke oil not only showing the turbulent flow behind the aircraft but also allowing the viewer to more easily see the path of the aircraft.]]> 2022-01-23 23:56:20 UTC https://padlet.com/luhar/GoFM22/wish/2007658942 Wake surfing eccrensh https://padlet.com/luhar/GoFM22/wish/2009829903 The boat is able to manipulate the air bags in the back of the boat to increase the size of the wake. ]]> 2022-01-24 21:13:11 UTC https://padlet.com/luhar/GoFM22/wish/2009829903 Melting snow aftosmis https://padlet.com/luhar/GoFM22/wish/2009879315 Putting my ski boots on the other day, I noticed the melting snow was mixing with the parking lot mud to create a beautiful little natural flow visualization! Funny place to spot it, but it was too pretty not to share. ]]> 2022-01-24 21:53:14 UTC https://padlet.com/luhar/GoFM22/wish/2009879315 Homemade Lava Lamp https://padlet.com/luhar/GoFM22/wish/2010595843 This temporary lava lamp solution demonstrates buoyancy forces through the displaced volume of the droplets of the cooking oil, which have lesser density than the water solvent, leading to its rise to the top of the fluid. This is due to the droplets having a higher viscosity than the solvent (water), leading to ability to flow much more easily.]]> 2022-01-25 07:58:20 UTC https://padlet.com/luhar/GoFM22/wish/2010595843 Jet Contrails https://padlet.com/luhar/GoFM22/wish/2017074328 Condensation trails as viewed from another aircraft. (We were flying alongside for ~ 2 hours over the North Atlantic)]]> 2022-01-28 01:46:40 UTC https://padlet.com/luhar/GoFM22/wish/2017074328 Iced tea/milk https://padlet.com/luhar/GoFM22/wish/2021945724 When combined the tea molecules diffuse into the milk. The motion of molecules is not very closely packed. - Eva P.]]> 2022-01-31 18:19:31 UTC https://padlet.com/luhar/GoFM22/wish/2021945724 Adding creamer to coffee andrew_recker https://padlet.com/luhar/GoFM22/wish/2022109983 2022-01-31 19:33:34 UTC https://padlet.com/luhar/GoFM22/wish/2022109983 Rice cooker steam jatsai1 https://padlet.com/luhar/GoFM22/wish/2025738390 2022-02-02 16:18:58 UTC https://padlet.com/luhar/GoFM22/wish/2025738390 Water Fountain chisugut https://padlet.com/luhar/GoFM22/wish/2025819641 A video I took from 2019. Nothing special, but just a pleasant sight. Would the streamlines here be considered parabolic? What would a streakline look like for a water fountain?]]> 2022-02-02 16:53:22 UTC https://padlet.com/luhar/GoFM22/wish/2025819641 Ladle after stirring dumplings in hot water yuanjess https://padlet.com/luhar/GoFM22/wish/2031784601 Shot in February 2021. Cold weather in Beijing makes the steam especially obvious and I posted an Instagram story about it. ]]> 2022-02-06 19:56:59 UTC https://padlet.com/luhar/GoFM22/wish/2031784601 "Sandfall" in Malibu yuanjess https://padlet.com/luhar/GoFM22/wish/2031787259 Was going down a steep slope when hiking in Malibu, almost fell down here😅]]> 2022-02-06 20:00:13 UTC https://padlet.com/luhar/GoFM22/wish/2031787259 Stunning view in Hainan, China yuanjess https://padlet.com/luhar/GoFM22/wish/2031792384 This was shot last summer in the southmost part of China on a foggy morning. The clouds were pillar-shaped, and the fog blurred the bottom part of the mountains in the background. ]]> 2022-02-06 20:06:22 UTC https://padlet.com/luhar/GoFM22/wish/2031792384 The launch of Ceres-1 yuanjess https://padlet.com/luhar/GoFM22/wish/2031800640 Went to Jiuquan Satellite Launch Center (Northwest China) to watch a rocket launch with my dad in 2020. Was very lucky to get this close-up view (3km from the rocket). 

Ceres-1 is a small-scale carrier rocket developed by Beijing-based high-tech company Galactic Energy, and it is capable of sending micro-satellites into orbit.]]> 2022-02-06 20:16:28 UTC https://padlet.com/luhar/GoFM22/wish/2031800640 Frying fish for Chinese New Year! yuanjess https://padlet.com/luhar/GoFM22/wish/2031814758 sorry - my fifth post of the day -

I made this "Squirrel fish" for our Chinese New Year dinner last week. 

Squirrel Fish is a well-known dish in Southeast China. It is prepared by deboning and carving a fish into an ornamental shape similar to a squirrel, and then deep-frying it before dousing it in sweet and sour sauce. 

Enjoy the view of boiling oil! ]]> 2022-02-06 20:34:43 UTC https://padlet.com/luhar/GoFM22/wish/2031814758 Kelso dunes jekim23 https://padlet.com/luhar/GoFM22/wish/2033932501 I climbed up a sand dune over the weekend and I noticed that the sand would flow like a very viscous fluid whenever I broke the surface tension.]]> 2022-02-07 19:28:49 UTC https://padlet.com/luhar/GoFM22/wish/2033932501 wildange https://padlet.com/luhar/GoFM22/wish/2034097828 Velocity vectors of a prototype foam dart in a 20 m/s simulated tunnel.]]> 2022-02-07 21:00:27 UTC https://padlet.com/luhar/GoFM22/wish/2034097828 Vortex Canon liyvonne https://padlet.com/luhar/GoFM22/wish/2037002628 In 2019, I attended a summer program at Rose-Hulman and studied vortex rings through working with vortex cannons. These cannons involve an empty chamber with a diaphragm on one end and a hole on the other end. When the elastic diaphragm is pulled back, the pressure in the chamber decreases as the volume increases. After the diaphragm is released, air is pushed out, with vortices curling around the lip of the hole, creating a vortex ring.
Unfortunately, a majority of the footage was lost (except for blurry photos), so I have uploaded a collaborator’s public video and slowed it down.


]]> 2022-02-09 03:29:38 UTC https://padlet.com/luhar/GoFM22/wish/2037002628 A rudder enables nautical nonsense wildange https://padlet.com/luhar/GoFM22/wish/2047211675 I realized that I had just seen and used an example of a directing vane in Sea of Thieves. By directing the flow of water and using Newton's Third Law, our mighty galleon can make tight turns, enabling my crew's maritime wealth redistribution.]]> 2022-02-14 20:51:44 UTC https://padlet.com/luhar/GoFM22/wish/2047211675 struhl1 https://padlet.com/luhar/GoFM22/wish/2052356614 Fire following a failed rocket static fire. Created a really cool looking blaze, but the flames in the bottom left corner especially caught my attention. I always love flame patterns that have this texture to them.]]> 2022-02-17 03:41:25 UTC https://padlet.com/luhar/GoFM22/wish/2052356614 Dry Ice Party Trick https://padlet.com/luhar/GoFM22/wish/2063108790 Small vortices within dry ice form after carbon dioxide bubbles and the water vapor of a solution are exposed to the boundary point, where air touches the water solvent’s surface. Fog occurs when sufficient amounts of carbon dioxide are allowed to cool the surrounding air and water of the container, causing water vapor to condense and thus produce that eerie ambiance of a foggy night!]]> 2022-02-23 18:02:46 UTC https://padlet.com/luhar/GoFM22/wish/2063108790 Fluid Flow of Theatrical Fog https://padlet.com/luhar/GoFM22/wish/2063177285 Theatrical fog effects are created through the mixture of glycol and water, which is then passed through a heat exchanger in order to produce water vapor that we interpret as fog. To ensure that the fog maintains itself low to the ground rather than immediately rise, a low-lying fog machine will typically include a cooling unit where the fog will be chilled using a fan and then pass through a compressor, which serves to “compress” the gas, increasing the pressure of the fog by reducing the volume of the compressible fluid. As noted in the video above, judging by the fog’s relatively smooth flow along its path lines, this fog formation can be described to be in laminar flow.
Informational Source: http://news.bbc.co.uk/1/hi/magazine/8089678.stm]]> 2022-02-23 18:40:59 UTC https://padlet.com/luhar/GoFM22/wish/2063177285 Smoke from Rocket Propellant https://padlet.com/luhar/GoFM22/wish/2063334543 I took this video during RPL’s static fire of our 8” diameter solid rocket motor, Earthshakiiiest, last week. Before testing *and exploding :((* our motor, we burned some extra propellant to test our igniter, which resulted in these pretty (but slightly terrifying) smoke clouds!

-Meghna Kiran]]> 2022-02-23 20:17:35 UTC https://padlet.com/luhar/GoFM22/wish/2063334543 Aftermath of rainy day andrew_recker https://padlet.com/luhar/GoFM22/wish/2063370605 Noticed this in a puddle on my way to class]]> 2022-02-23 20:44:20 UTC https://padlet.com/luhar/GoFM22/wish/2063370605 Time lapse of smoke yuanjess https://padlet.com/luhar/GoFM22/wish/2070610197 This is shot as a time lapse today from my window. Somewhere was on fire apparantly. The smoke formed a weird shape with a big head and a long tail. ]]> 2022-03-01 02:05:05 UTC https://padlet.com/luhar/GoFM22/wish/2070610197 Laminar Flow martinbt2 https://padlet.com/luhar/GoFM22/wish/2074201479 Cool laminar flow tik tok. Not my video but showed up on my For You page.]]> 2022-03-02 18:43:20 UTC https://padlet.com/luhar/GoFM22/wish/2074201479 Fluid Boundary maamezqu https://padlet.com/luhar/GoFM22/wish/2082308683 I noticed this at the store. A boundary layer is clearly seen between the water and cyclopentasiloxane, the two main ingredients in this eye makeup remover. As I move the bottle, there are circular ripple-like deformations about the center. Looks super cool!]]> 2022-03-07 18:38:17 UTC https://padlet.com/luhar/GoFM22/wish/2082308683 Ruben's Tube liyvonne https://padlet.com/luhar/GoFM22/wish/2085124362 I recently learned about Ruben’s Tube in one of my music technology classes. By drilling evenly spaced holes into a sealed tube, pumping flammable gas through the tube, and igniting the gas while playing pure tones on one end, one can visualize acoustic standing waves that change with frequency. 
I would personally love to build and document this, but due to safety reasons, a video found online will suffice.


]]> 2022-03-09 01:28:08 UTC https://padlet.com/luhar/GoFM22/wish/2085124362 Windy Pond kakumar1 https://padlet.com/luhar/GoFM22/wish/2086612174 A particularly windy day at the pond. There were a lot of birds, and they were trying to swim against the current, but could not overcome the force of the water. What was interesting is that there seemed to be a lot more birds than usual because the turbulence in the water brought more fish to the surface.]]> 2022-03-09 17:50:57 UTC https://padlet.com/luhar/GoFM22/wish/2086612174 windy day snowboarding yuanjess https://padlet.com/luhar/GoFM22/wish/2094452103 A clip shot at Solitude Ski Resort, Utah. It was very windy, and snow was blown from mountain tops/trees causing "white-out" in some areas of the trails. ]]> 2022-03-14 18:24:59 UTC https://padlet.com/luhar/GoFM22/wish/2094452103 Hazer and lights aakeelin https://padlet.com/luhar/GoFM22/wish/2106029943 I led worship at a Christian conference over spring break and this video shows the lights and hazers that were used on stage. I thought it was super mesmerizing!]]> 2022-03-21 19:12:05 UTC https://padlet.com/luhar/GoFM22/wish/2106029943 Convectional Flows in Melted Wax https://padlet.com/luhar/GoFM22/wish/2106096882 Being so close to a heat source seems to have created very visible convectional flows in this little pool of melted wax]]> 2022-03-21 20:01:04 UTC https://padlet.com/luhar/GoFM22/wish/2106096882 Fluid Dynamics Involved in a Stingray’s Swimming Behavior ortizzam https://padlet.com/luhar/GoFM22/wish/2110468249 Due to a stingray’s flattened disk shape, stingrays must thrust themselves forward by propelling themselves with pectoral wings, that create a large series of leading edge vortices. Through the displacement of the surrounding water with this undulatory wing-like motion, the stingray is able to provide itself with a lift force that allows it to move through the water. It is interesting to note that depending on the wing shape of a particular species of stingray, a stingray may be classified as slow or fast-swimming, with fast swimming stingrays maintaining a higher Reynolds and Stroudhal number during the range of their oscillatory motion.

Reference Source: https://www.people.fas.harvard.edu/~glauder/reprints_unzipped/Borazjani.etal.2016.pdf]]> 2022-03-23 19:54:28 UTC https://padlet.com/luhar/GoFM22/wish/2110468249 Hydrodynamic Benefit of a Shark’s Dorsal Fins ortizzam https://padlet.com/luhar/GoFM22/wish/2110712393 Sharks are considered highly efficient swimmers (such as the dashing white-spotted bamboo shark shown above), due in large part to their dorsal fins which contribute to thrust vectoring and provide added momentum to the fluids displaced in their swimming motion. Although we may initially presume that these dorsal fins are static stabilizing appendages, they are in fact highly maneuverable and assist in propulsion while the shark is involved in steady swimming. This physical adaptation is akin to a surfboard fin, with a dorsal fin’s size and shape among shark species affecting the vorticity, drag, and velocity of the shark’s swimming behavior.

Reference Source: https://journals.biologists.com/jeb/article/220/21/3967/33732/Hydrodynamic-function-of-dorsal-fins-in-spiny]]> 2022-03-23 23:56:08 UTC https://padlet.com/luhar/GoFM22/wish/2110712393 Ramen aakeelin https://padlet.com/luhar/GoFM22/wish/2116060109 The steam coming off my ramen was super noticeable because the sun was shining in from the window behind it.]]> 2022-03-28 00:37:04 UTC https://padlet.com/luhar/GoFM22/wish/2116060109 Rain running down a window jatsai1 https://padlet.com/luhar/GoFM22/wish/2117741580 2022-03-28 18:03:49 UTC https://padlet.com/luhar/GoFM22/wish/2117741580 Blizzard Flow kakumar1 https://padlet.com/luhar/GoFM22/wish/2117742912 Happened while driving through a mountain pass in Utah (in summer tires :")). Aside from Star Wars warp drive, it reminded me of a uniform flow + vortex, with the flow parting around the car and creating a "safe" channel for a bit behind us. Another car behind us chose to drive in this safe zone, which honestly was a great strategy.]]> 2022-03-28 18:04:31 UTC https://padlet.com/luhar/GoFM22/wish/2117742912 Sand Dunes kakumar1 https://padlet.com/luhar/GoFM22/wish/2117764664 Sand flows down the Kelso Dunes. There's a sort of rippling effect on the surface as the sand travels down, reminiscent of water. These dunes are also called the singing dunes, where the falling sands vibrations caused a low hum/buzz sound to emit from the dune. We were able to get it to sing because of the amount of sand we turned up while climbing up the dune.]]> 2022-03-28 18:15:22 UTC https://padlet.com/luhar/GoFM22/wish/2117764664 Slow Motion of mixing milk AngusT1314 https://padlet.com/luhar/GoFM22/wish/2129156349 A slow motion clip recently recorded of milk being mixed into a drink. Over the next minute or so, it slowly dispersed throughout the whole drink. Looked pretty cool. ]]> 2022-04-04 17:41:00 UTC https://padlet.com/luhar/GoFM22/wish/2129156349 WhAt ArE ClOuDs? chisugut https://padlet.com/luhar/GoFM22/wish/2133289816 High-speed clouds (best to mute) where the fringes evaporate in real time. BUT, would water vapor be unsteady and compressible as a cloud? In terms of fluid dynamics, how does a cloud form and maintain shape (especially in *turbulent* conditions)?]]> 2022-04-06 19:19:42 UTC https://padlet.com/luhar/GoFM22/wish/2133289816 Mixing eggs yuanjess https://padlet.com/luhar/GoFM22/wish/2139450020 my first time to look at eggs from a slow-mo perspective. Unlike normal liquids, eggs don't really spill over even if you stirr real hard. ]]> 2022-04-11 16:23:36 UTC https://padlet.com/luhar/GoFM22/wish/2139450020 Air superiority over Highland Park wildange https://padlet.com/luhar/GoFM22/wish/2145265074 First thoughts were: "Those are F-35s.  All prior flyovers were models older than me.  There are tensions in Europe. Oh no."]]> 2022-04-16 01:43:06 UTC https://padlet.com/luhar/GoFM22/wish/2145265074 Rocket Nosecone Ejection Test struhl1 https://padlet.com/luhar/GoFM22/wish/2146588893 High speed footage I took of a rocket nosecone ejection test for RPL. The high speed camera is able to capture the CO2 escaping the system as it ejects.]]> 2022-04-18 04:55:49 UTC https://padlet.com/luhar/GoFM22/wish/2146588893 Exit flow from Bilge Pump of a Boat ortizzam https://padlet.com/luhar/GoFM22/wish/2151811702 A bilge pump's expulsion of excess water from a boat is shown below. Bilge pumps are essential for the prevention of a boat from sinking through the removal of excess water by expelling water that accumulates along the bilge wells of a boat. Different types of bilge pumps include diaphragm and centrifugal bilges, with centrifugal pumps using a spinning impeller that uses rotational energy to discharge water, while a diaphragm bilge pump creates a vacuum of air, forcing water out through an inlet check valve whenever the diaphragm is pulled upwards. Ahoy there, bilge pump!

Source: https://www.carverpump.com/marine-bilge-pumps-the-ultimate-guide-for-ships/
https://www.carverpump.com/marine-bilge-pumps-the-ultimate-guide-for-ships/
]]> 2022-04-21 10:09:21 UTC https://padlet.com/luhar/GoFM22/wish/2151811702 Waves at Pipeline juliaa_lim https://padlet.com/luhar/GoFM22/wish/2153140084 Large ocean waves (and a surfer!) at Pipeline beach in Hawaii this past winter! Hawaii's North Shore is known to have large waves, reaching about 20 ft or more, during the wintertime.]]> 2022-04-22 05:31:01 UTC https://padlet.com/luhar/GoFM22/wish/2153140084 Steam in New York! juliaa_lim https://padlet.com/luhar/GoFM22/wish/2153141305 Steam coming from an unknown source on a cold, windy day in New York. The formation and interaction of the turbulent eddies with the wind are visible here!]]> 2022-04-22 05:32:35 UTC https://padlet.com/luhar/GoFM22/wish/2153141305 maamezqu https://padlet.com/luhar/GoFM22/wish/2156181503 Local waterfall in LA! A couple weeks ago when it was raining this caught me by surprise. It is cool to see the dispersion of water as it free falls through the air, contrary to free stream flow. Is there a classification for this type of fluid motion? Additionally, the water on the windshield briefly shows non-straight path lines as it rolls down the glass.]]> 2022-04-25 08:52:58 UTC https://padlet.com/luhar/GoFM22/wish/2156181503 maamezqu https://padlet.com/luhar/GoFM22/wish/2156195572 I usually boil water in the mornings and this always happens. As I tilt the pitcher, the water touches the sides and briefly boils. Because the sides are hot, there is a thermal boundary layer as the water passes over the "wall". Conveniently, this thermal boundary exceeds the boiling point of water, making the heat transfer visible. Interesting to see the water "jump up" as the steam bubbles form.]]> 2022-04-25 09:04:28 UTC https://padlet.com/luhar/GoFM22/wish/2156195572 maamezqu https://padlet.com/luhar/GoFM22/wish/2156203258 Very fine sand sometimes behaves like a fluid as shown in previous posts. I am unsure how fine the sand was here, but the mixing of the two show distinct stream lines around solid bodies. This was at Corona Del Mar Beach.]]> 2022-04-25 09:11:35 UTC https://padlet.com/luhar/GoFM22/wish/2156203258 Natural Convection around a Candle https://padlet.com/luhar/GoFM22/wish/2157174694 2022-04-25 18:53:51 UTC https://padlet.com/luhar/GoFM22/wish/2157174694 Fog en route to Mauna Kea akanshas2 https://padlet.com/luhar/GoFM22/wish/2157208724 This past summer, my family and I were in the Big Island of Hawaii and wanted to see the sunset from a high point on Mauna Kea, a dormant volcano. It was a hot, sunny day when we started out our drive from near sea level closer to the coast, but as we traveled higher in altitude, it became suddenly and noticeably colder - hence, thick and beautiful fog.]]> 2022-04-25 19:16:38 UTC https://padlet.com/luhar/GoFM22/wish/2157208724 Waves at the Cliffs of Moher https://padlet.com/luhar/GoFM22/wish/2157709203 I took this video over spring break at the Cliffs of Moher in Ireland. The wind was very strong when you walked to the top of the cliffs, and the waves were very large. It was overall a very beautiful sight!
Post made by Emily Duijser ]]> 2022-04-26 02:39:34 UTC https://padlet.com/luhar/GoFM22/wish/2157709203 Waves at Manhattan Beach https://padlet.com/luhar/GoFM22/wish/2157713726 I took this video in Manhattan Beach when I was walking along The Strand. The waves were fast and there were lots of them. 
By: Emily Duijser ]]> 2022-04-26 02:43:40 UTC https://padlet.com/luhar/GoFM22/wish/2157713726 Stall to flat spin in a Cessna 152 jnejmano https://padlet.com/luhar/GoFM22/wish/2157962401 2022-04-26 06:31:54 UTC https://padlet.com/luhar/GoFM22/wish/2157962401 Sea Turtles' Use of Dorsal Ridges ortizzam https://padlet.com/luhar/GoFM22/wish/2158196171 Sea turtles such as the dapper fellow shown above, have dorsal ridges along their back, which with its indentations can help reduce drag and negative lift when the turtle displaces the water around it with its circular swimming motion. The idea that sea turtles are well adapted to their aquatic environment, however, is nothing to be too shell-shocked about!
Informational Source: https://www.nature.com/articles/srep34283


]]> 2022-04-26 09:24:28 UTC https://padlet.com/luhar/GoFM22/wish/2158196171 USCRPL Launch asingh781 https://padlet.com/luhar/GoFM22/wish/2159640408 Video of USCRPL's launch this past weekend for recovery and avionics test vehicle Jawbone. 
Apogee: 41,300 ft
Max Mach: 1.717
Peak Acceleration: 7.266 Gs ]]> 2022-04-27 03:13:46 UTC https://padlet.com/luhar/GoFM22/wish/2159640408 Plane flying through a cloud aakeelin https://padlet.com/luhar/GoFM22/wish/2159764096 When flying home from LA to Oklahoma for Easter weekend, I looked out the window and saw that we were flying through a cloud and remembered our conversation in class the other day about fluid particles in clouds. ]]> 2022-04-27 05:01:51 UTC https://padlet.com/luhar/GoFM22/wish/2159764096 Drag on Garbage Bin andrew_recker https://padlet.com/luhar/GoFM22/wish/2159931554 Might be hard to see in the video but there was noticeable turbulence behind this garbage bin. The runoff from the torrential rain started carrying it all the way down the road.]]> 2022-04-27 07:29:18 UTC https://padlet.com/luhar/GoFM22/wish/2159931554 Flyboarding in San Diego Harbor daarguet https://padlet.com/luhar/GoFM22/wish/2160000222 I wanted to share a video of my friends and I “flyboarding” at the San Diego Harbor. The way this works is a rider is strapped into a board with jets on the feet, which is then connected by a long hose to the jetski. Water is then forced from the jetski to the jets on my feet, which then propels me up and out of the water. The pressure of the water is controlled by the driver who can vary the thrust by idling the jetski. In the video it can observed how turbulent the water is and the immense amount of pressure it comes out with. This was extremely fun and I highly recommend it! ]]> 2022-04-27 08:27:50 UTC https://padlet.com/luhar/GoFM22/wish/2160000222 The Narrows - Slot Canyon River daarguet https://padlet.com/luhar/GoFM22/wish/2160024089 I recorded this video of my siblings going through a slot canyon river trail called “The Narrows” located in Zion National Park, Utah. You can hike up this trail for miles and miles covering a variety of water velocities, depths, and temperatures. The river is formed from water moving from higher elevation to lower elevation. In the video, the water was slightly turbulent, making it a challenge for us to cut across. Throughout this trail, the velocity of the water will change depending on how narrow/wide the river path gets, same way water velocity in a hose changes with a narrower nozzle. If you’re ever in Zion National Park, this is a must do! ]]> 2022-04-27 08:47:23 UTC https://padlet.com/luhar/GoFM22/wish/2160024089 Here is something beautiful. jsbhatia https://padlet.com/luhar/GoFM22/wish/2160092499 Here is something beautiful. ]]> 2022-04-27 09:46:51 UTC https://padlet.com/luhar/GoFM22/wish/2160092499 Some with laminar, turbuelent, and toilet lingkuan https://padlet.com/luhar/GoFM22/wish/2160253317 An explaination image is attached at the end of the video. ]]> 2022-04-27 12:16:52 UTC https://padlet.com/luhar/GoFM22/wish/2160253317 adlewis4 https://padlet.com/luhar/GoFM22/wish/2160752958 This is the rear wing of a nascar. Aero components on racecars are used to create downforce that leads to the car having more grip. This is a unique wing because nascars race on oval tracks so their wing is more of a right angle shape instead of being symmetric - Anna Lewis]]> 2022-04-27 16:53:56 UTC https://padlet.com/luhar/GoFM22/wish/2160752958 adlewis4 https://padlet.com/luhar/GoFM22/wish/2160758813 This is a video of smoke generated from welding usc racing frame. I really like this video in particular because both ends of the tube were mostly capped off so the smoke could only escape through a small opening here. The interference created some really beautiful movement visible in the smoke. - Anna Lewis]]> 2022-04-27 16:57:28 UTC https://padlet.com/luhar/GoFM22/wish/2160758813 Slow Motion USC RPL Launch handel2 https://padlet.com/luhar/GoFM22/wish/2160761507 5% speed RPL Jawbone launch showing thrust development in the nozzle for a compressible flow.]]> 2022-04-27 16:59:06 UTC https://padlet.com/luhar/GoFM22/wish/2160761507 Formula 1 Cars cazzi2 https://padlet.com/luhar/GoFM22/wish/2160770715 This video was taken at the Saudi Arabia GP in Jeddah last season. It's pretty impressive to see how fast the cars can go (they can reach up to 360 Kph). 

F1 cars also have a drag coefficient of about 0.7-1.0, which is actually larger than some cars like the BMW X5 which has a drag coefficient of 0.36. This is because the rear wing of an F1 car is designed to generate downforce which in turn causes a lot of turbulence. ]]> 2022-04-27 17:04:47 UTC https://padlet.com/luhar/GoFM22/wish/2160770715 Clouds in Faraya, Lebanon cazzi2 https://padlet.com/luhar/GoFM22/wish/2160783761 Found this picture in my camera roll from winter break and thought it was super pretty! 

I looked up types of clouds and I believe these ones are technically classified as "cirrocumulus clouds", which are a type of "high-level clouds".

According to weather.gov, "High-level clouds occur above about 20,000 feet and are given the prefix "cirro-". Due to cold tropospheric temperatures at these levels, the clouds primarily are composed of ice crystals,  and often appear thin, streaky, and white."]]> 2022-04-27 17:12:35 UTC https://padlet.com/luhar/GoFM22/wish/2160783761 USC ADT Plane at Competition cazzi2 https://padlet.com/luhar/GoFM22/wish/2160799091 This is the AeroDesign Team's plane being flown at the Design, Build, Fly competition in Wichita, Kansas!

You might be able to catch a glimpse of the airfoil and the control surfaces as the plane is turning and see how the rudder and ailerons are used to turn the plane.

More generally, aircraft are a good example of fluid dynamics in real life. For example, lift is generated due to a pressure difference between the top of the wing (air speeds up, static pressure decreases) and the bottom of the wing (greater static pressure than the top). ]]> 2022-04-27 17:21:49 UTC https://padlet.com/luhar/GoFM22/wish/2160799091 Shrine in Osaka yuanjess https://padlet.com/luhar/GoFM22/wish/2160820648 I shot a time lapse of the famous scene in Osaka during my trip in Japan. Enjoy the moving clouds and waves!  ]]> 2022-04-27 17:34:43 UTC https://padlet.com/luhar/GoFM22/wish/2160820648 Powder in Utah yuanjess https://padlet.com/luhar/GoFM22/wish/2160826773 Snowboarders love "powder", which is puffy fresh snow. When you fall, it doesn't hurt that much. What's interesting about powder is that, when you gain enough speed, you can float on this puffy snow, but when you slow down, you sink into it easily and it takes you a lot of effort to get out again.  ]]> 2022-04-27 17:38:22 UTC https://padlet.com/luhar/GoFM22/wish/2160826773 crystal like wave during boat trip to Catalina yuanjess https://padlet.com/luhar/GoFM22/wish/2160841755 I realized I recorded a lot of fluid motions in my life. Here's another one during my boat trip to Catalina. The wave closest to us appears crystal-like in slow-mo. ]]> 2022-04-27 17:47:20 UTC https://padlet.com/luhar/GoFM22/wish/2160841755 Steam vents at Kilauea summit akanshas2 https://padlet.com/luhar/GoFM22/wish/2160856794 At the summit of the active volcano Kilauea in Hawaii, there are points at which hot water vapor can be observed rising from the ground. Rocks underground become incredibly hot, as they are heated by magma from deep underground, and groundwater that seeps below the surface is heated by these rocks and rises up again as water vapor!]]> 2022-04-27 17:55:55 UTC https://padlet.com/luhar/GoFM22/wish/2160856794 Smoke around a campfire log akanshas2 https://padlet.com/luhar/GoFM22/wish/2160872282 I was standing around a campfire and noticed some cool behavior exhibited by the smoke from the fire. The smoke appears to wrap around the edges of the log as it travels upwards, demonstrating a sort of laminar behavior immediately around the log before becoming turbulent further from the log (this is initially true for the flows on the left and right of the log, but the flow to the right becomes turbulent due to wind towards the end of the video).]]> 2022-04-27 18:05:39 UTC https://padlet.com/luhar/GoFM22/wish/2160872282 Vernal Falls, Yosemite National Park https://padlet.com/luhar/GoFM22/wish/2160878918 A 317 ft waterfall on the Merced River just downstream of Nevada Falls in Yosemite.
Post by: Amanda Akrawi]]> 2022-04-27 18:09:57 UTC https://padlet.com/luhar/GoFM22/wish/2160878918 Jawbone Launch mkiran1 https://padlet.com/luhar/GoFM22/wish/2160963665 This past weekend, RPL launched a 6” vehicle called Jawbone. The smoke at ignition was an incredible sight!]]> 2022-04-27 19:06:49 UTC https://padlet.com/luhar/GoFM22/wish/2160963665 More Hawaii Waves kristhom1 https://padlet.com/luhar/GoFM22/wish/2160997831 I thought I would add my waves from Hawaii. I was on Oahu on the south shore.]]> 2022-04-27 19:31:51 UTC https://padlet.com/luhar/GoFM22/wish/2160997831 Blue Angels at Naval Academy Graduation https://padlet.com/luhar/GoFM22/wish/2161019478 A video of the streams off of F-18 fighters at my brothers graduation last year. Volume is necessary- Sean Janka]]> 2022-04-27 19:49:37 UTC https://padlet.com/luhar/GoFM22/wish/2161019478 A car on fire on the 110 https://padlet.com/luhar/GoFM22/wish/2161023321 A car on fire on the 110 last year, you can see the smoke rising from the vehicle it is hard to decipher the intricacies of the black smoke with the low quality video.-Sean Janka]]> 2022-04-27 19:53:06 UTC https://padlet.com/luhar/GoFM22/wish/2161023321 Waves in Indonesia https://padlet.com/luhar/GoFM22/wish/2161025131 I didn’t take this video, but it is an example of the perfect waves in Indonesia.-Sean Janka]]> 2022-04-27 19:54:43 UTC https://padlet.com/luhar/GoFM22/wish/2161025131 Old Faithful at Yellowstone liyvonne https://padlet.com/luhar/GoFM22/wish/2161110106 This video of Old Faithful was taken during a family road trip at Yellowstone last summer.]]> 2022-04-27 21:16:34 UTC https://padlet.com/luhar/GoFM22/wish/2161110106 Rainbow Pool at Yellowstone liyvonne https://padlet.com/luhar/GoFM22/wish/2161110898 This video of the Rainbow Pool was taken during a family road trip at Yellowstone last summer.]]> 2022-04-27 21:17:18 UTC https://padlet.com/luhar/GoFM22/wish/2161110898 F1 Austin October 2021 handel2 https://padlet.com/luhar/GoFM22/wish/2161211906 Prime view of the braking zone in a key overtaking part of the track. The high downforce of the cars limit drafting at close distances so overtaking is difficult. 

]]> 2022-04-27 23:35:57 UTC https://padlet.com/luhar/GoFM22/wish/2161211906 A Navy War Ship Life Fire exercise. https://padlet.com/luhar/GoFM22/wish/2161596148 A Life fire exercise on a Navy War Ship is by far the most amazing experience. Her you can see the rapid pressure changes from the ejecting 5 inch gun and the shell that gets ejected afterwards. This video was taken in 2013 on a U.S. Navy Arleigh Burke Class Destroyer DDG 51 where I was stationed. You can see a lot of fluid dynamics happening during the firing of the weapon. ]]> 2022-04-28 05:35:05 UTC https://padlet.com/luhar/GoFM22/wish/2161596148 Navy Five inch Life Fire ntabe https://padlet.com/luhar/GoFM22/wish/2161603074 The Navy Destroyer life fire exercise is quiet fun when you see some of the gadgets on display. The pressure changes taking place during the ejection process causing vibrations. The shell ejection at the end is an added bonus. Lots of Fluid dynamics on display. This was taken in 2013 on DDG 68, an Arleigh Burke class Navy Destroyer where I was stationed. ]]> 2022-04-28 05:42:27 UTC https://padlet.com/luhar/GoFM22/wish/2161603074 Water running along the side of an airplane sciullo1 https://padlet.com/luhar/GoFM22/wish/2161653267 As I was flying over spring break, I noticed these cool paths the water was taking along the side of the airplane in the air. It was fun to see fluid dynamics in acition! ]]> 2022-04-28 06:26:41 UTC https://padlet.com/luhar/GoFM22/wish/2161653267 Hail Storm sciullo1 https://padlet.com/luhar/GoFM22/wish/2161663630 Here is a video from a few years ago. I was caught in a hail storm back in Colorado. It was so bad I had to pull over and wait for the hail to lessen before I could drive again. Cool to see the water falling off my wipers. Less cool to see the hail damage taking place. ]]> 2022-04-28 06:35:38 UTC https://padlet.com/luhar/GoFM22/wish/2161663630 Dubai Fountain ntabe https://padlet.com/luhar/GoFM22/wish/2161671520 A fun-filled display of fluid dynamics taken in 2016 at the Dubai Fountain. The path-lines and stream-lines followed by these jets is just amazing to watch. Taken from about 100 ft away.]]> 2022-04-28 06:41:24 UTC https://padlet.com/luhar/GoFM22/wish/2161671520 A Ferry generating water wakes as its passing under Queensboro bridge in New York City https://padlet.com/luhar/GoFM22/wish/2161673572 I found a couple of videos from back when I used to commute between NYC boroughs using the Ferry boat. The wakes behind the ferry have always been impressive.  
By Fatima Karami. ]]> 2022-04-28 06:42:49 UTC https://padlet.com/luhar/GoFM22/wish/2161673572